Description

4-Bromo-1-Methyl-1H-Pyrazole-3-Carbonyl Chloride is a high-purity, reactive chemical intermediate essential for advanced organic synthesis. This compound is a critical building block for constructing complex heterocyclic molecules, offering a versatile handle for further functionalization. It is primarily utilized by research institutions and industrial R&D departments in the pharmaceutical and agrochemical sectors for developing novel active ingredients.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for candidates targeting various therapeutic areas.
• Agrochemical Synthesis: Used in the research and development of new herbicides, fungicides, and insecticides, leveraging the pyrazole core's bioactivity.
• Ligand and Catalyst Development: Serves as a starting material for creating specialized ligands used in transition metal catalysis and coordination chemistry.
• Material Science Research: Employed in the synthesis of advanced organic materials, including polymers and liquid crystals with specific electronic properties.
• Custom Synthesis and Contract Manufacturing: A vital reagent for fine chemical and CDMO (Contract Development and Manufacturing Organization) companies producing bespoke compounds for clients.

Basic Information

Product Name	4-Bromo-1-Methyl-1H-Pyrazole-3-Carbonyl Chloride
CAS No.	912569-70-1
Molecular Formula	C5H4BrClN2O
Molecular Weight	223.46 g/mol
Synonyms	1-Methyl-4-bromo-1H-pyrazole-3-carbonyl chloride; 4-Bromo-1-methylpyrazole-3-carbonyl chloride; 3-Carbonyl chloride-4-bromo-1-methylpyrazole; 1-Methyl-4-bromopyrazole-3-carboxylic acid chloride; 4-Bromo-1-methyl-1H-pyrazole-3-carboxylic acid chloride
EINECS	Contact for details

Quality Control

Our 4-Bromo-1-Methyl-1H-Pyrazole-3-Carbonyl Chloride is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC, NMR, and GC-MS, to ensure high chemical purity and identity confirmation. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing all relevant specifications. Our quality commitment supports compliance with cGMP and ICH guidelines for use in regulated research and development.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and should be handled under an inert atmosphere (e.g., nitrogen or argon) to prevent decomposition. Keep away from strong acids and incompatible organic solvents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.